Results 251 to 260 of about 2,291,633 (330)

Extraction, purification, biological effects and applications of acrosin: a review. [PDF]

Front Cell Infect Microbiol
Quan R, Wu X, Zhang J, Liu R, Han J, Liu D.   +5 more
europepmc   +1 more source

Water‐Mediated 1,7‐Palladium Aryl‐to‐Aryl Migration in an Unusual Aryne Trimerization Enables the Synthesis of Multihelicenes with Profoundly Hindered Stereogenic Axes

Advanced Synthesis &Catalysis, EarlyView.
In the presence of a Pd0 catalyst, large π‐extended arynes trimerize in an unusual manner to forge extremely compact and strained chiral benzenoids. This new trimerization reaction involves a 1,7‐Pd isomerization, a rare and poorly understood process that is elucidated.
Albert Artigas, Manuel A. Ortuño, Jesús Castro‐Esteban, Michel Giorgi, Diego Peña, Dolores Pérez, Yoann Coquerel   +6 more
wiley   +1 more source

Redrawing the Mannich‐Type Reaction through Carbonyl Umpolung Reactivity

Advanced Synthesis &Catalysis, EarlyView.
GA: Herein, a conceptually novel one‐pot multicomponent strategy is reported for the streamlined construction of five‐membered imidazolidines from 1,2‐diaza‐1,3‐dienes (onefold), amines (twofold), and formaldehyde (twofold). This redesigned Mannich‐type reaction that exploits a carbene‐like activity of 1,2‐diaza‐1,3‐dienes (realized by “umpolung ...
Vittorio Ciccone, Sara Caselli, Giacomo Mari, Fabio Mantellini, Gianfranco Favi   +4 more
wiley   +1 more source

Standardization of extraction, identification, and characterization of an immunoglobulin Y antibody: A potential inhibitor of cariogenic and endodontic microbiome. [PDF]

J Conserv Dent Endod
Bhate M, Sharma S.
europepmc   +1 more source

Visible‐Light‐Promoted Dearomatization for The Construction of Imidazole Scaffolds

Advanced Synthesis &Catalysis, EarlyView.
Lighting up flat aromatics: a visible‐light photocatalytic dearomative acylation of imidazo[1,2‐a]pyridines using α‐keto acids as sustainable acyl radical precursors is reported, leading to dual fluorescent imidazoles. Dearomatization is a powerful strategy for constructing complex carbocycles and heterocycles, though it typically relies on harsh ...
Silvia Roscales, Aurelio G. Csáky
wiley   +1 more source

Utility of gel filtration chromatography in evaluating successful resection of ectopic adrenocorticotropic hormone-producing tumor: a case report and literature review. [PDF]

Endocr J
Nakatsuji M, Bando H, Yamamoto M, Kanzawa M, Doi T, Tsujimoto Y, Yoshino K, Fukuoka H, Sato I, Yano Y, Tanaka Y, Ogawa W.   +11 more
europepmc   +1 more source

One‐Pot Cascade Synthesis of Isoquinolinone‐Fused Quinoxalines Through Sequential Rh(III)/Pd(II) Catalysis

Advanced Synthesis &Catalysis, EarlyView.
A new one‐pot, dual catalytic strategy for the synthesis of polycyclic isoquinolinone‐fused quinoxalines from commercially available N‐(2‐acetamidophenyl)benzamides and 1,3‐diynes is reported. This transformation proceeds via Rh(III)/Pd(II)‐mediated sequential NH/CH activation/annulation. Detailed mechanistic studies elucidate the reaction pathway. A
Wei‐Jung Chiu, Indrajeet J. Barve, Hung‐Sheng Hsieh, Chung‐Ming Sun   +3 more
wiley   +1 more source

Low-grade green coffee with Bacillus amyloliquefaciens NY124 protease: extraction, purification, and functional synergy of chlorogenic acid and trigonelline. [PDF]

AMB Express
Im AE, Bharti D, Lim G, Bak Y, Choi J, Yang KY, Park N, Nam SH.   +7 more
europepmc   +1 more source

A Comprehensive Review of the Phytochemistry and Therapeutic Efficacy of <i>Viola yedoensis</i> Makino. [PDF]

Molecules
Wang S, Shen C, Zhang S, Di H, Wang Y, Guan F.   +5 more
europepmc   +1 more source